2330 at a glance
- 12-hour time
- 11:30 PM
- 24-hour clock
- 23:30
- Say it
- twenty-three thirty hours
- Part of day
- Night
- Minutes after midnight
- 1,410
- Minutes until midnight
- 30
- Decimal hours
- 23.50
- Share of the day gone
- 97.92%
How to convert 2330 to standard time
- The hour digits are 23, which is past noon. Subtract 12 from the hour: 23 − 12 = 11.
- Keep the minutes (30), insert a colon and add PM: 11:30 PM.
How to say 2330
| Style | How it sounds |
|---|---|
| Military (spoken) | “twenty-three thirty hours” |
| Radio, digit by digit | “two three three zero” |
| Civilian | “half past eleven at night” |
| Written 24-hour | 23:30 or 2330 |
Off the hour, say the hour pair and then the minutes: 23 → “twenty-three”, 30 → “thirty.” Adding “hours” at the end is standard in military speech but optional elsewhere.
2330 Zulu (UTC) in US time zones
Military and aviation schedules give times in Zulu — Coordinated Universal Time — so that everyone works from one clock. When a message says 2330Z, this is the local time across the United States:
| Time zone | Standard time | Daylight time |
|---|---|---|
| Eastern (EST / EDT) | 6:30 PM — R | 7:30 PM — Q |
| Central (CST / CDT) | 5:30 PM — S | 6:30 PM — R |
| Mountain (MST / MDT) | 4:30 PM — T | 5:30 PM — S |
| Pacific (PST / PDT) | 3:30 PM — U | 4:30 PM — T |
| Alaska (AKST / AKDT) | 2:30 PM — V | 3:30 PM — U |
| Hawaii (HST) | 1:30 PM — W | No daylight time |
The letter after each time is that zone’s military time-zone letter: Eastern standard time is R (Romeo, UTC−5), so 2330Z is 1830R. Daylight time runs from the second Sunday in March to the first Sunday in November; Hawaii and most of Arizona stay on standard time all year.
If 2330 is your local time
- 2330 Eastern is 0430Z in winter (EST) and 0330Z in summer (EDT).
- 2330 Central is 0530Z in winter (CST) and 0430Z in summer (CDT).
- 2330 Mountain is 0630Z in winter (MST) and 0530Z in summer (MDT).
- 2330 Pacific is 0730Z in winter (PST) and 0630Z in summer (PDT).
Times around 2330
| Change | Military | Standard |
|---|---|---|
| −60 min | 2230 | 10:30 PM |
| −45 min | 2245 | 10:45 PM |
| −30 min | 2300 | 11:00 PM |
| −15 min | 2315 | 11:15 PM |
| This time | 2330 | 11:30 PM |
| +15 min | 2345 | 11:45 PM |
| +30 min | 0000 | 12:00 AM (next day) |
| +45 min | 0015 | 12:15 AM (next day) |
| +60 min | 0030 | 12:30 AM (next day) |
Shifts that start at 2330
- An 8-hour shift starting at 2330 ends at 0730 (7:30 AM the next day).
- A 10-hour shift starting at 2330 ends at 0930 (9:30 AM the next day).
- A 12-hour shift starting at 2330 ends at 1130 (11:30 AM the next day).
- To total the hours on a real time card with breaks, use the time card calculator.
2330 in everyday use
- 2330 is late evening — 11:30 PM. Quiet hours at many campgrounds, hotels and apartment buildings start around 2200, and night-shift handovers often happen in this window.
- For 2000 to 2359, subtract 12 from the whole hour: 23 − 12 = 11, so 2330 is 11:30 PM. The day ends 30 minutes later, when the clock rolls over to 0000.
Frequently asked questions
What is 2330 in regular time?
2330 is 11:30 PM in regular 12-hour time. Subtract 12 from the hour (23 − 12 = 11) and add PM.
Is 2330 AM or PM?
2330 is PM. Military times from 0000 to 1159 are AM and times from 1200 to 2359 are PM.
How do you say 2330 in military time?
Say “twenty-three thirty hours.” In radio procedure each digit is spoken separately, so 2330 can also be read digit by digit.
What is 2330 Zulu in Eastern time?
2330Z is 6:30 PM Eastern Standard Time (UTC−5) and 7:30 PM Eastern Daylight Time (UTC−4).